Document Detail

Biosorption of Cu(II) ions onto the litter of natural trembling poplar forest.
MedLine Citation:
PMID:  17601663     Owner:  NLM     Status:  MEDLINE    
The litter of natural trembling poplar (Populus tremula) forest (LNTPF) was used for the biosorption of Cu(II) ions in a batch adsorption experiments. The sorption capacity of LNTPF was investigated as a function of pH, particle size, agitating speed, initial Cu(II) concentration, adsorbent concentration and temperature. The efficiency of copper uptake by the used LNTPF increases with a rise of solution pH, adsorbent concentration, agitating speed, temperature, and with a decline of particle size and initial Cu(II) concentration. The biosorption process was very fast; 94% of Cu(II) removal occurred within 5 min and equilibrium was reached at around 30 min. Batch adsorption models, based on the assumption of the pseudo-first order, pseudo-second order mechanism were applied to examine the adsorption kinetics. The pseudo-second order model was found to best fit the kinetic data. EPR studies combined with FTIR spectroscopy were used to represent the biosorption mechanism. Thermodynamic parameters such as DeltaH degrees, DeltaS degrees and DeltaG degrees were calculated. The adsorption process was found to be endothermic and spontaneous. Equilibrium data fitted well to Langmuir adsorption model. This study proved that the LNTPF can be used as an effective, cheap and abundant adsorbent for the treatment of Cu(II) containing wastewaters.
Murat Dundar; Cigdem Nuhoglu; Yasar Nuhoglu
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-05-24
Journal Detail:
Title:  Journal of hazardous materials     Volume:  151     ISSN:  0304-3894     ISO Abbreviation:  J. Hazard. Mater.     Publication Date:  2008 Feb 
Date Detail:
Created Date:  2008-01-24     Completed Date:  2008-04-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9422688     Medline TA:  J Hazard Mater     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  86-95     Citation Subset:  IM    
Department of Environmental Engineering, Faculty of Engineering, Atatürk University, 25240 Erzurum, Turkey.
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MeSH Terms
Copper / chemistry,  isolation & purification*
Electron Spin Resonance Spectroscopy
Hydrogen-Ion Concentration
Particle Size
Populus / chemistry*
Spectroscopy, Fourier Transform Infrared
Time Factors
Water Pollutants, Chemical / chemistry,  isolation & purification*
Reg. No./Substance:
0/Soil; 0/Water Pollutants, Chemical; 7440-50-8/Copper

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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